CRASH: One dead, four injured after SUV flips on I-5 near San Onofre

One person died and four people were injured Saturday after the sport utility vehicle they were in rolled when the driver slammed on the brakes to stop for backed-up traffic on northbound Interstate 5 near San Onofre, a California Highway Patrol officer said.

The driver lost control of the 2004 Ford Explorer when he swerved to the right to avoid traffic stopped for U.S. Border Patrol inspections, CHP Officer Jim Bettencourt said.

The front-seat passenger, a 26-year-old man from San Diego, was thrown from the SUV in the 8:15 a.m. crash, Bettencourt said. The man, who was not wearing a seat belt, was flown by helicopter to Scripps Memorial Hospital La Jolla, where he later died, Bettencourt said.

The driver, a 22-year-old San Diego man, and three other passengers ---- two women and one man ---- suffered moderate to major injuries and were taken to local hospitals, Bettencourt said. He did not know their ages or cities of residence.

The CHP stopped traffic at 8:49 a.m. while rescuers landed a medical helicopter on the freeway. All lanes were reopened by 9:26 a.m., according to the CHP website.

Bettencourt said the crash was under investigation, but investigators do not believe alcohol or drugs played a role.